Direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different SPD techniques : HPT and ECAP

Abstract

Oxygen-free copper of 99.95 wt.% purity was severely deformed at room temperature by two modes of severe plastic deformation, equal-channel angular pressing (ECAP) and highpressure torsion (HPT). ECAP was performed using 4, 16 and 24 passes, and HPT was performed using 1/2, 1 and 10 turns. The results show that while recovery occurs during both ECAP and HPT… (More)

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